NCIS A petty officer's murder provides clues to a bombing that's been unsolved for 40 years in this new episode. Mark Harmon stars with guest star A Martinez. 8 p.m. CBS

The Flash In a nod to the original version of this series that aired in the early 1990s, Mark Hamill reprises his role as the Trickster — still behind bars, he's consulted by Barry and Joe (Grant Gustin, Jesse L. Martin) in this new episode. 8 p.m. KTLA

Fresh Off the BoatRex Lee guest stars as Jessica's (Constance Wu) college beau in this new episode. 8 p.m. ABC

The Dovekeepers Cote de Pablo ("NCIS") stars in this two-night miniseries set during the time of the historic siege of Masada. 9 p.m. CBS

Marvel's Agents of S.H.I.E.L.D. Lucy Lawless and Edward James Olmos guest star in a new episode. 9 p.m. ABC

New Girl Jess (Zooey Deschanel) crashes a funeral in this new episode. 9 p.m. Fox

Cancer: The Emperor of All Maladies The second episode of the new miniseries recalls the medical profession's place in the "war on cancer" that President Nixon launched in 1971. 9 p.m. KOCE